Sony Corporation

Masashi Kumada

Ryoichi Nakashima

Hiroaki Sato

Yoichi Miyajima

Hideyuki Sato

Kentaro Suzuki

Hisashi Aoki

Mieko Hara

Yoshihito Tamesue

Yoshio Harada

Shoichi Shintani

Jiro Moriya

Michihiro Kaneko

Mitsuo Yamaguchi

Shinji Suzuki

A data communication device includes: a communication execution unit that executes serial communication of an asynchronous type; a bit variance detection block that detects a variance between bits in communication data which the communication execution unit receives from a remote communicating party; a timer that measures a low-level pulse width which is a low-level pulse duration and which is determined with the position of the variance between bits detected by the bit variance detection block; and a control unit that performs transmission speed recognizing processing on the communication data according to the low-level pulse width measured by the timer, wherein based on the confirmation that the low-level pulse width is a low-level pulse width equivalent to a bit width compatible with low-speed communication data, the control unit recognizes the transmission speed for the communication data as a low speed.

Data communication device, communication control method, and program

A battery pack has a charge and discharge count measuring part () configured to measure the number of times of charges and discharges of a secondary battery based on the summed value of the charge current for the secondary battery, and a decay rate output part () configured to compute a decay rate that indicates a degree of decay of the secondary battery based on the number of times of charges and discharges measured by the charge and discharge count measuring part () and to output it to a device being a discharge load. For example, the charge and discharge count measuring part () repeatedly sums the detected values of the charge current to a predetermined threshold, and counts up the number of times of charges and discharges every time when the summed value reaches the threshold. Accordingly, even though charges and discharges are repeated at finer steps in a relatively narrow voltage range, the number of times of charges and discharges can be counted accurately, and the computing accuracy of the decay rate is improved. In the battery pack in which the secondary battery is accommodated, parameters for detecting the remaining amount of the battery are detected more accurately.

Battery pack, electronic appliance, and method of detecting remaining amount of battery

A power supply system is provided. The power supply system includes electronic equipment adapted to control power supply based on battery identification information from a battery installed in a battery housing section; and a power supply plate, the power supply plate including a plate main body installed in the battery housing section of the electronic equipment, and a cable, one end of which is connected to the plate main body and the other end of which is led through a lead-out hole of the battery housing section out of the electronic equipment, the other end also having a connector formed thereon which is connected to a power source, wherein power is supplied from the power source connected to the connector of the power supply plate to the electronic equipment.

Power supply system, power supply plate and electronic equipment

Growing community of inventors

Aichi, Japan

Masashi Kumada